WindowsXPServicePack3

I downloaded the ServicePack3 XP, but i want to be sure that this will in no way compromize my files and folders or my system stability,if i install it.
When i installed SP2 i had none of this problem,hopefully i will not have with SP3 but i just wanted to be sure before i install so i am asking here.
Many thanks in advance.

Keep in mind Service Pack 3 is a preview version, so expect some stability issues.

If that's the case i am keeping SP2 which has GREAT STABILITY.
Since i have it ,i never have restarted my PC for the stability.